#include <iostream>

using namespace std;

int main() {
    cout << '\a' << endl;
    int num;
    char ch1,ch2;
    cout << "请输入一个数字";
    cin >> num;
    cin >> ch1 >> ch2;
    //ch = cin.get();
    cout << num << '\t' << ch1 << '\t' << ch2 << endl;





    /*cout << CHAR_MAX << '\t' << CHAR_MIN << endl;
    cout << UCHAR_MAX << endl;*/
}
